310 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 



Mill., for the small flowered species. See also Janchen in Abh. d. k. k. 

 Zool.-Bot. Ges. Wien. (1907) 6, Dunal in DC. Prod, i., 277, 1824. 



373. Cerastium semidecandrum L., var. congestum Gren. 

 Mon. Cerast. 29, 1841. Pedunculis brevissimis, floribusque 

 abbreviatis, congesto-umbellatis, numerosis, densis, calicibus globosis, 

 capsulaque calicem vix excedente. Abundant on the sandhills, St. 

 Aubin's Bay, Jersey, 1910. C. E. Salmon in Journ. Bot. 17, 1913. 



374. Cerastium tetrandrum Curt., var. dunense C. E. 

 Salmon in Journ. Bot. 17, 1913. Planta prostrata, glandulosissima, 

 rami et folia crasso-carnosi, calyx et capsula grandiores et latiores 

 quam in typo, capsula tertia parte usque ad dimidium sepalis longior 

 et perspicue curvata. St. Aubin's, H. Trimen, 1871 in Hb. Br. Mus.; 

 Quenvais, J ersey ; Vazon Bay Shore, Guernsey. A robust, prostrate, 

 very glandular plant, its leaves large and fleshy, often purple 

 coloured. Exsicc. F. Schultz Herb. Norm. Cent. 7, n. 620. Dep. Manche, 

 Gallia. C. E. Salmon, I.e. 



408. Sagina procumbens L., var. pentamera (Rouy & Fouc. Fl. 

 Fr. iii., 286, 1896, as a race). When in Skye in 1908 I noticed about 

 Sligachan specimens of what was apparently pentamerous Sagina 

 procumbens, which Syme in E. B., ii., 121, alludes to as occasionally 

 occurring. Recently it struck me that, having no specimens to 

 compare, they might be a form of scotica growing at low levels. Mr 

 A. H. Pawson, of Oxfordshire, who was this year at Skibost, kindly 

 collected several specimens of the same form, which clearly proved 

 that they belonged to procumbens and had nothing to do with scotica 

 which appears to be a distinct species. It seeds abundantly, and in its 

 growth, foliage, and long peduncles, offers strong differentiating 

 characters other than those derived from the inflorescence. Professor 

 Graebner has independently come to the same opinion, which is shared 

 by the Rev. E. S. Marshall who recently has had good opportunities 

 of seeing it in its native habitats. In this pentamerous Sagina 

 procumbens the sepals, the very small (sometimes absent) petals and 

 5-valved capsule are points, which, as Syme says, might cause 

 confusion, therefore it may be well to define it as a var. or sub-var. 

 pentamera. Sepalis 5, pe talis 5, et capsula quinque valvas habente. 

 Occasionally on the same plant a tetramerous flower occurs. Skibost, 

 1913, A. H. Pawson; Sligachan, Skye, 1908; Mallaig, Westerness; 

 Strath Carron, W. Ross. G. C. Druce. 



